Tacking mechanism.



0. MSHTON DECD.

H. ASHTON. :xscumx.

TACKING 'MECHANiSM.

APPLICATION FILED FEB-15.1916.

Patented Aug. 20, 1918.

2 SHEETS-SHEET l- 0. ASHTON, DEC'D.

n. ASHTON, EXECUTMXQ' v 'I'ACIUNG MECHANISM.

Patented Aug. 20, 1918.

2 8HEETS-SHEET 2- UNITED STATES PATENT OFFICE.

OBBELL ASHTON, DECEASED, LATE 0F SWAMPSOOTT, MASSACHUSETTS; BY HANNAH ASHTON, EXECUTBIX, OF SWAMPSCOTT, MASSACHUSETTS; SAID ORRELL ASHTON ASSIGNOB, BY MESNE ASSIGNMENTS, T0 UNITED SHOE MACHINERY CORPORA- TION, OE EATER/SON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

TACKING MECHANISM.

Original application filed July 11, 1912, Serial No. 708,848. Divided and this application filed February 15,

Specification of Letters Patent.

' 1916. Seria1No.78,518.

To cllcoho'm, it may concern:

Be it known that ORRELL ASHTON, deceased, late of Swampscott, in the county of Essex and State of Massachusetts, invented certain Improvements in Tacking Mechanisms, of which the following description, in connection with the accompanying drawings, is a specification, like reference char acters on the drawings indicating like parts in the several figures.

This invention relates to mechanism for tacking parts of a boot or shoe assembled on a last.

The present application is a division of my application Serial No. 708,848, filed July 11, 1912, to which reference may be had for a complete description of an assembling machine in which the tacking mechanism of the present invention is embodied.

In the art of shoemaking it is frequently desirable to provide tacking devices for inserting substantially simultaneously a .plurality of tacks through the upper and into the last to retain the upper temporarily in posit-ion. Such tacking devices may also be used to secure together permanently parts of the shoe materials. In such machines the shoe is usually supported mechanically in a substantially fixed position which is practically the same for all sizes and styles of shoes and hence-with the tacking devices fixed against movement in a direction perpendicular to the surface ofthe work in which the tacks are to be driven, as is the...

case in; the prior machines, work having varying inclinations of contours will not be positioned-with: all the tacking devices in contact therewith during the simultaneous insertion ofZth-e tacks, whereas contact of all the tacking devices with the Work is highly important for-the best results.

Ar -object of' the present invention is to providea machine in which all; the tacking devices will engage the work irrespectively of the contour or inclination of. the face of the Work operated upon. With this object in View affeature of theinvention consists .in {tacking devices which are constructed and arranged for adjustment to suit the various-. incl'inations and contents of the face ofgthe Work into which, the tacks are inserted. It is preferable that the adjustment of the -appended claims,

the tacking devices be automatically effected and in the embodiment of the invention shown the mechanism comprises tacking de vices which are separately movable in'a di rection substantially perpendicular to the face of the work into which the tacks are to be driven for automatic adaption to the inclination of the contour of that face of the work when it is brought into engagement with them. As herein shown two tack ing devices are provided which are connect ed by equalizing means so that, if, because of the contour or inclination of the work, only one of the tacking devices engages the work, pressure upon that tacking device will operate to force the other tacking device also into engagement with the work.

The embodiment of the invention selected for illustration is a machine for securing a shoe upper to the last at the heel end of the shoe by a plurality of fastenings inserted through the rear face of the upper at difierent points in its height. It will be readily understood that a machine provided with vertically spaced stationary tacking devices would be unsuited for this work since the sides and vertical curvatures at the rear ends of lasts are so various that an arrangement of stationary tacking devices which would fit one last would be totally unsuited for another. In a machine'embodying the present invention, however, the tacking de vices are adjustable for all sizes and styles of last, the adjustment beingautomatically effected by mountingthe tacki-n devices movably in a directionperpendicu ar to the face of the work upon which they act and connecting them by an equalizing lever so .that they will adjust themselves to the curvature of the face of any shoebrought into engagement with them. Means is provided for varying thespacing between the fastenings for lasts of different heights and also for supporting the work and drawing it firmly intoengagement with the tacking devices and looking it in this position during their operation.

Other .features of the invention includingdetails of construction and combinations of parts will be described and defined in In t e drawings which illustrate the machine constituting one embodiment of the i i pa.

Figure 1 is a view of the machine in side elevation; I

Fig. 2 is a fragmentary side View partly in section on the line 22 of Fig. 4.;

Fig. 3 is a sectional view on the line 33 of Fig. 2;

Fig. 4 isa plan View of the tacking mechanism; and

Fig. 5 is a detai l of the equalizing mechanism connecting the tackers.

Referring to Fig. 1 of the drawings, 10 indicates a suitable base or frame upon and in which the operating parts of the machine are mounted. At the front lower portion of the frame a jack support 12 is pivoted at 14 for movement toward andfrom the machine. The upper portion of the supporting member 12 is hollow to permit the passage therethrough of the lower end of the jack post 16. A collar 18 is formed upon the jack post and is adapted to rest upon a frame 20 to limit the downward move ment of the post in its support. A lever 22 is pivoted to the post 10 at a point 24 and has its forwardly projecting portion bifurcated to form two branches 26, 28. The arm. 28 is arranged for engagement with the lower end of the jack post 16 to elevatethe same in a manner to bedescribed.

A: controlling lever 30 ispivote'dat40 between its ends to the member 12 andhas a substantially. fixed pivot 42-provided by a link 34 connected to the frame 10. The lever carries at its lower end a roll 32 which rides upon theupper face of the arm 26 of the lever 22. The upper-end 36 of the lever 30 is arranged to engage a stop 38 on the member 12 when the jack is at the limit of its outward swinging movement. It will be apparent that as the jack is swun in about-the-point 14ifrom'its position in Fig 1 the lever 30 will bi'e swung ahoutdts p'ivo-t- 42 and the roll '32 will-"becarnal-inwardly and upw a-rdly away from the branch 26 of the-lever 22 andi'thatthedeve'r-22 may then act in response-to a weight 44 to bring the branch28' against-thelower end ofth'e jack post 16 and ,yieldingly raise the work againsta stop 45 which-Emits its upward movemefit.

A-hook 46 is pivoted to the frame 10 ata oint;48 and is provided with the block 49 arranged for engagement with a sto 502011 the frame 10 to limit-itsdownwan moveinent The frame QOispivoted' tii the "top of thamemb'er 12' for forward and rearw'ard adjustment by means of a screw i and is secured in adjustedosition clamp belt 5-1. At the rear end of the 'freiute is inoilnt'ed an aintifrictioh roll fit'azgdtheihoek 46 has formed upon-ita cam s-uriaee 58- adapted for operative engagement with the roll 56. The formation df the' cam surface- 58 is such that as the hook descends and engages the hook 56 the jack will bedrawn toward the machine. The-lever 46- 'rearwardly from the pivot 48 as re reamed at 60 in Fig. 1 and the rearward p ojection is connected by a rod 62 to opera ive parts of the machine by which the hook is operated. The arrangement is such that when the machine is .in its normal stopp d position, as shown in Fig. 1, the conlfecfihg rod 62 is depressed and-the hook 45 raised :to- 76 permit the jack to swing forward away from the machine. The lower end of the rod 62 carries a project-ion fl arrangedifor engagement with-the upper ends of a pair of pawls 78 which arep-ivoted at 80 to the 80 frame 10 and are normally pressed into engagement with a segmental ratchet 84 upon the rear end of the lever 22: When the machine is in stopped position the projection 74 engages and holds the pawl 78 out of en- 85 gagement with the ratchet 8 1 ermitting the lever 22 to be moved at will. i'e'n the jack is swung into position tobring the last into proper relation to the operative parts of the machine the heel end of the shoe carried on no the last engages two tack blocks 88 90. Referring to Fig. 2, one of the tack b l'ocks forms part of a-slide91a'ndthe other part of =a slide 92. The slides 91; 92iare'mounted for movement longitudinally in suitably 95 formed guideways 93, see Fig. 3: At-the for-ward end of each slide -a. laterallyproectmglug 94 Fig. 4', is arranged in "ciooperative relation to a spring .pressed lug- 96 whieh' tendsto move the slide and the tack 1 block 88 forming apart-thereof forward. An equalifz ing -1ever98';-I igs-. 2 a'nd' 5, new oted at 1-00 to a. stationary. member-101', its ends being located for engagement by 't'he rear ends of 'theslides. 91, 92. By this ar- 1 rangement the rear end'of the may be 'firn-il, seated against both tine bliocksz 88,

vented by turn'rig a a shied-thumb we 1 O2 through part of a1 revblution bring its rounded portion baekg of -a shbulder- 104: forrh'ed-upon= the -sl ide9l'. 1

A tack driving meehanismslofii receives fastenings from any suitable form of tack supplying device 107 from which the tacks are delivered to the tack blocks through tubes 111, The driving mechanisms are provided with driver levers 113 which are operated by driver cams on the main shaft of the machine in the usual manner to actuate the drivers 115. Relative adjustment of the tack blocks 88, 90 in a vertical direction is provided by mounting the slides 91, 92 of the tack blocks respectively on vertically movable members 114, 116, Fig. 3, a clampin means 112 being provided to hold the mem ers 114:, 116 together after the desired adjustment has been efl'ected. The tack blocks 88, 90 are Vshaped as shown in Fig. 4 to center the shoe laterally and are slotted to permit the passage of the tacks and drivers through them into the work. Each driver mechanism 106 may be adjusted about its bolt 108 by loosening the bolt and turnin an adjusting screw 112 after which the be t 108 is again tightened to hold the mechanism in adjusted position. The slots in the V-blocks extend transversely and by the described adjustment the lateral position in which the tacks will be driven relatively to the face of the work presented to the blocks can be varied.

In the operation of the machine the shoe upon the jack is placed on the last pin of the jack post 16 and is moved toward the machine, the jack post 16 being yieldingly raised during this movement as described. When the shoe has been positioned against the stop 45 and against the tack blocks 88, 90 the treadle is depressed to start the machine, whereupon the connecting rod 62 is operated and the hook 46 swings about its pivot 48. The cam 58 cooperates with the cam roll 56 to draw the work firmly against the tack blocks which automatically adapt themselves to the contour of the heel end of the last by reason of the equalizing lever 98. If the pressure of one of the tack blocks relatively to the other is too great the position of the fulcrum pin 100 may be changed. As the rod 62 which is connected to the rear end of the hook 46 rises the projection 74 releases the pawls 78 one of which will then engage a tooth of the ratchet 84 and lock the jack against depression; tacks are then dropped by the tack supplying device into the upper ends of the tube 111 and fall through the tubes, be-

ing carried by their own momentum into position in front of the horizontal or upwardly inclined drivers 115. The drivers then operate to insert the tacks through the tack blocks 88, 90. The jack is then re leased and the machine comes to rest.

Having fully described my invention, what I claim as new and desire to secure by United States Letters Patent is 1. In a machine of the class described, the C(lll'lblllillllOIl" of a plurality of tacking devices arranged to contact with the work and mounted for movement in directions perpendicular to the face of the work which they engage and into which the tacks are to be driven, and means for permitting relative movement of either of the devices by pressure of the work upon the other device until both devices come into bearing upon the Work, and then supporting both devices rigidly against pressure of the work.

2. In a machine of the class described, the combination of aplurality of tacking devices adapted to contact with the work and mounted for movement perpendicularly to the face of the work with which they contact and into which the tacks are to be inserted, and means for automatically effecting, by movement of one of the tacking devices adjustment of another tacking device so that each will contact with the work.

3. In a machine of the class described, the combination of a plurality of tacking devices adapted to engage a face of the work and mounted for relative movement perpendicularly to said face of the work, said devices being constructed and arranged to insert tacks into the said face of the work, and equalizing means between the tacking devices for causing movement of one of the devices by movement of another.

.k. In a machine of the class described, the combination of a pair of tacking devices mounted for movement substantially perpendicularly toward and from the face of the work into which the tacks are to be driven, and means connecting the tacking devices for effecting equal and opposite movements of the tacking devices when the work is pressed against one of them.

5. In a machine of the class described, the combination of a pair of tacking devices mounted for movement perpendicular to the face of the work into which the tacks are driven and adapted to be moved by pressure of the work against them, and means for distributing the pressure between the tacking devices in a predetermined ratio.

6. In a machine of the class described, the combination of a work support, a plurality of tacking devices spaced apart and arranged to be engaged by the face of the work into which the tacks are driven, equalizing connections for adjusting the tacking devices to the engaged surface of the work irrespectively of lts contour, and means for moving and holding the work support to effect a firm engagement between the work and the tacking devices.

7. In a machine of the class described, the combination of a work support, a plurality of tacking devices spaced apart and arranged to be engaged by the surface of the work into which the tacks are driven, equalizing connections for adjusting the tacking devices to the engaged surf-ace of the work irrespectively of its contour, and means for moving and holding the work support to effect a firm engagement between the work and tacking devices.

8. In a machine of the class described the combination of a work support a plurality of tacking devices spaced apart and arranged to he engaged by the surface of the work into which the tacks are driven when the Work is moved toward the devices in the direction in which the tacks are inserted, equalizing connections for adjusting the tacking devices to the surface of the Work engage-d thereby irrespectively of its contour, means for automatically moving the work support toward the tacking devices and holding it there during the operation of the tacking devices.

9. In a machine of the class described, the combination of a plurality of tacking devices dis-posed one above the other an equalizing mechanism connecting the devices and arranged to permit relative movement of the devices to enable them all to emit-act. with the face of a shoe into which the tacks are to be driven.

10. In a machine of the class described. :10

the combination of a slotted V-block for 40 centering the rear end of a shoe, a tacking mechanisn'i located to insert tacks through the V-block, and means for effecting laterai adjustment of the tacking niechani-sm relatively'to the block to-vary the location of'the 4 tack relatively tothe rear end of'the shoe.

In testimony whereof I have signed my name to this specification.

HANNAH ASHTON, limecutmic of the will of Orwell Ashton, do

ceased.

copies or 'this'patent may beobtained d'or fi'r'e ce'nts each/by whitening-the"commfisloner ot Iatanh. Washington, D. 0." 

